Draw call for each instantiate, and using CombineChildren!

Unity Engine
,
1

I’ve read similar threads to this, so I’m not coming in blind here :slight_smile:

Here’s what I’m trying to do: I’m instantiating spheres… 63 of them in fact, from a Bubble Prefab which is just a primitive sphere with a Transparent/Diffuse material on it, and a few scripts to handle collisions / bonus score. The Prefab is also a kinematic rigidbody, if that helps…

In code, I instantiate the bubble, change the material’s color property based on a random number, and then the important part. I assign the transform’s parent to an empty GameObject with the CombineMesh script attached to it. I’m still getting 1 draw call per Prefab instantiated, which kills performance even before I draw my character!

Any help is appreciated.

Here’s the code:

var bubblePrefab : GameObject; //the prefab to spawn;
var timeDelay : float; //time in between instantiating bubbles;

var penaltyBubbleValue : int = -100000;

var maxRedBubbles : int = 8;

function Start()
{
	var numRedBubbles : int = 0;
	
	//+2x,-2z
	for(var i=0;i<9;i++)
		for(var j=0;j<7;j++)
		{
			var clone : GameObject = Instantiate(bubblePrefab, Vector3(bubblePrefab.transform.position.x+(2*i), bubblePrefab.transform.position.y, bubblePrefab.transform.position.z-(2*j)),Quaternion.identity);
			
			clone.transform.parent = GameObject.Find("Bubbles").transform;
			
			var MyBonusScore : BonusScore = clone.GetComponent(BonusScore);
			var randomscore : float = Random.Range(1,15);
			
			var myAudioCollision : AudioCollision = clone.GetComponent(AudioCollision);
			
			if(randomscore <= 2  numRedBubbles < maxRedBubbles)//RED BUBBLE
			{
				MyBonusScore.bonusScore = penaltyBubbleValue;
				clone.renderer.material.color = Color(.5,0,0,.5);
				myAudioCollision.audioSourceObj = GameObject.Find("AudioSourceBubbleNegative");
				numRedBubbles++;
			}
			else//GREEN BUBBLE
			{
				MyBonusScore.bonusScore = Mathf.RoundToInt(randomscore)*1000;
				clone.renderer.material.color = Color(0,randomscore/10,0,.5);
				myAudioCollision.audioSourceObj = GameObject.Find("AudioSourceBubblePop");
			}
				
		}
		
	Destroy(this);
}
2

Objects which have unique materials can’t be combined. Changing the color property for a material makes it a unique material. If you want your prefabs to be combined, you’ll have to come up with some other method, like vertex colors, or a texture atlas with different colored textures + UV offsets.

Also, the default sphere primitive is too high-poly for actual usage (on the iPhone); make a better one in a 3D app.

–Eric